(WSB Radio) -- Authorities in north Georgia plan to file criminal charges against a 14-year-old Gilmer County boy who left home early Wednesday morning and stayed gone for fourteen and a half hours. 

Gilmer County Sheriff Stacey Richardson tells Channel 2 Action News "we're certainly thrilled that's he's home safe, that's the main thing.  Now we've got to look at why he left."  He added "we're going have to talk to him to find out what the situation was to cause him to do this, because he caused a pretty extensive search."

The parents of Josh Chastain may also have to reimburse the county for the cost of the search, which included dozens of deputies, a GBI K-9 unit and a Georgia State Patrol helicopter.

The legally blind teen was found around 8:30 Wednesday night by his older sister walking with his dog along a road about a mile from the family's Ellijay home.

His father, Chris Chastain, says "he's quiet, he's still not really talking.  He's not really said anything, but he's OK." 

According to family members, Josh Chastain suffers from depression.

Sheriff Richardson says the teenager faces juvenile runaway charges.